Only check date range when defined

[inode64]

It can happen and it has happened to me, that the date of the videos recorded by the gopro is in the future and now they are not imported

I have created a function to group the check of date ranges and it only checks the dates in case they contain any value

Type:

• [x] Bug fix
• [ ] New feature
• [ ] Breaking change
• [ ] Documentation

Camera:

• [ ] GoPro
• [ ] Insta360
• [ ] DJI
• [ ] Android
• [ ] This PR adds a new camera

Component:

• [ ] Core logic
• [ ] Import
• [ ] Merging
• [ ] Firmware Update
• [ ] Video Manipulation

Checklist before approval:

• Linter pass
• Build pass